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with a tbe, intake, mbc @ 17lbs, and a slightly smaller tire (higher revs up top cruising..91mph=4000rpm i think
i get something like 35mpg
24 around town.
whats the secret? watch your boost gauge, give your car enough gas to goto .0 (no boost no vaccum) and shift around 3000rpm. sometimes its better to rev a pinch higher and give it a little less gas. its a little slow getting around, but if im in a rush, ive got 17psi on tap.

actually, if im in a rush ive got 8psi on tap. gas is 2.79 a gallon now, f that haha

I purchased my 03' WRX Wagon with 125,000 and it only got about 15-18MPG. But after installing a K&N Drop in filter, cleaning the intake box, throttle body, and checking all of my hoses and lines were properly hooked up and in good condition, my MPG Changed to 22-28MPG. The intake was extremely dirty, and the throttle body did need a good cleaning.